Final consignees test the efficiency of their LSP every 14 cycles instead of every hour after minimal contract duration

Looks like displays are updated in parallel of models so there is conflict with values of nb of vehicle and quantities + use float instead of int

Don't compute directly the share by mode of transport (otherwise it is not usable for analyses purpose in CSV)

One ship per day seems more realistic for the simulation (too much ships means they ends almost empty)

Need to create an empty commodity at the beginning otherwise commodities don't appear in list of species when simulation is running

Update according to new inheritance of network species + update some comments + don't need the get_path_time_length function for this purpose (too CPU consuming)